Silicon powder processing device

Abstract

The invention provides a silicon powder processing device. The silicon powder processing device comprises a silicon powder making machine, at least one Venturi injection device and a connecting pipeline; the silicon powder making machine comprises a machine body, a feeding hole, a cutter rest, a silicon powder cutter, a discharging hopper, at least one first air inlet and at least one second air inlet; the feeding hole is formed in the top of the machine body; the discharging hopper is arranged at the lower end of the body; the silicon powder cutter is arranged on the cutter rest; the cutter rest is arranged in the machine body; the first air inlets are formed in the machine body and is as high as the cutter rest; the second air inlets are formed between the first air inlet and the discharging hopper; and the silicon powder making machine is connected with the at least one Venturi injection device through a connecting pipeline penetrating through the second air inlets. According to the silicon powder processing device, a small hole is formed at the height of the cutter rest as a nitrogen supplementing point, a venturi is arranged between a discharge pipeline of a fan and the air inlets, so that the silicon powder with qualified particle size is prevented from being crushed again by an impact rotary blade to generate fine powder, and the purpose of reducing the fine powder rate is achieved.

Description

technical field [0001] The invention relates to the field of silicon powder processing, in particular to a silicon powder processing device. Background technique [0002] In order to ensure the safety of the system during the production process of the pulverizing machine in the prior art, it is necessary to fill the pulverizing machine with nitrogen to ensure that the oxygen content inside the pulverizing machine is lower than 7%. At the same time, in order to prevent dust from escaping, it is necessary to increase the fan in the whole system so that the whole system is in a state of slight negative pressure. At present, for the addition of nitrogen, it is necessary for nitrogen and silicon powder to enter the pulverizer through the feeder at the same time; the gas-solid mixture will cause erosion and wear to the feeder and the swirling feed pipe, and the service life is short. If there is a leak, it needs to be shut down for maintenance; and The gas extracted by the fan pa...

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Problems solved by technology

[0003] The invention provides a silicon powder processing device, which is used to solve the problem of adding nitrogen in the prior art. It is necessary for nitrogen and silicon powder to enter the powder making machine through a feeder at the same time, and the gas-solid mixture is fed to the feeder and the rotary feeder. Pipelines cause erosion wear, short service life, and waste of nitrogen

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